The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 02, 2025
Filed:
Sep. 02, 2019
Koninklijke Philips N.v., Eindhoven, NL;
Olaf Thomas Johan Antonie Vermeulen, Oss, NL;
Alan James Davie, Cambridge, GB;
Steven Charles Deane, Cambridge, GB;
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Abstract
A system () for detecting tissue inflammation, gingivitis specifically, including a light emitter () configured to emit light at a tissue region within a user's mouth; at least four wavelength-sensitive photodetectors (, and) configured to detect optical signals diffusely reflected through the tissue region, each of the at least four wavelength-sensitive photodetectors comprising a filter (BPF, BPF, BPF, and BPF) and a photodiode (D, D, D, and D), where the photodiodes are stacked on top of each other to generate current differential signals for amplifiers corresponding with the photodiodes, wherein the generation of the current differential signals removes an unwanted component from the optical signals prior to amplification; and an inflammation detection unit () configured to receive outputs from the corresponding amplifiers and detect inflammation at the tissue region.